APA

Mussen P. H., Langer J. & Covington M. V. (1969). Trends and issues in developmental psychology. New York: Holt, Rinehart and Winston.

Chicago

Mussen Paul Henry, Langer Jonas and Covington Martin V. 1969. Trends and issues in developmental psychology. New York: Holt, Rinehart and Winston.

Harvard

Mussen P. H., Langer J. and Covington M. V. (1969). Trends and issues in developmental psychology. New York: Holt, Rinehart and Winston.

MLA

Mussen Paul Henry, Langer Jonas and Covington Martin V. Trends and issues in developmental psychology. New York: Holt, Rinehart and Winston. 1969.